AlienWare (so Dell) has just unveiled a gaming PC running Ubuntu and Steam, designed to be hooked up to a TV - essentially a Steambox. "With over 25 gaming titles available and more being added, users can access Steam For Linux to play online games, including your favorite titles like Team Fortress 2 and Serious Sam 3." Everything starts out small, but with Valve going full throttle with this, expect this library to grow.